多出来一个/dev/sdb1的区, 这个1就是之前主分区之后指定的分区编号.
[root@localhost ~]# fdisk -l Disk /dev/sda: 299.0 GB, 298999349248 bytes 255 heads, 63 sectors/track, 36351 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x4d69fe0e Device Boot Start End Blocks Id System /dev/sda1 * 1 26 204800 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 26 36352 291785728 8e Linux LVM # /dev/sdb磁盘: Disk /dev/sdb: 4000.0 GB, 3999999721472 bytes 255 heads, 63 sectors/track, 486305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x8f3043b5 # 多出来的分区/dev/sdb1 Device Boot Start End Blocks Id System /dev/sdb1 1 267349 2147480811 83 Linux ......(5) 查看当前分区表中的分区信息 - cat /proc/partitions
[root@localhost ~]# cat /proc/partitions major minor #blocks name 8 0 291991552 sda 8 1 204800 sda1 8 2 291785728 sda2 8 32 3906249728 sdb # 添加的新磁盘 8 33 2147480811 sdb1 # 创建的新分区 253 0 2046660608 dm-0如果创建完之后，cat /proc/partitions 查看不到对应的分区, 使用 parprobe 刷新命令即可:
[root@localhost ~]# partprobe /dev/sdc 2.2 格式化新分区(1) 格式化新分区 - mkfs -t
这里建议将新分区格式化为ext4文件类型, 还有ext2, ext3等文件类型, 区别请参考博客 ext2、ext3与ext4的区别 .
[root@localhost ~]# mkfs -t ext4 /dev/sdb1 mke2fs 1.41.12 (17-May-2010) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 134217728 inodes, 536870202 blocks 26843510 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 16384 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000 Writing inode tables: 8874/16384(2) 等待一小会后, 将出现下述提示, 说明格式化完成:
Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 26 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override. 2.3 挂载新分区(1) 创建目录, 并将 /dev/sdb1挂在到该目录下:
[root@localhost /]# mkdir data && cd /data [root@localhost data]# mount /dev/sdc1 /data1(2) 查看挂载是否成功:
[root@localhost data]# df -l Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/VolGroup-LogVol 286901696 18601728 253726196 7% / tmpfs 66020980 0 66020980 0% /dev/shm /dev/sda1 495844 33476 436768 8% /boot # 挂载成功: /dev/sdb1 2113784984 202776 2006208168 1% /data 2.4 设置开机自动挂载编辑文件 /etc/fstab:
[root@localhost data]# vim /etc/fstab # 文件内容如下: # /etc/fstab # Created by anaconda on Wed Sep 12 10:41:40 2018 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # /dev/mapper/VolGroup-LogVol / ext4 defaults 1 1 /dev/sdb1 /data ext4 defaults 1 1 UUID=22b1d425-d050-43c3-a735-06d48bbb9051 /boot ext4 defaults 1 2 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 3 LVM方式挂载磁盘 - 推荐 3.1 查看磁盘容量信息 [root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VG-LogVol 1.9T 1.8T 61G 97% / # LVM卷组-逻辑卷 tmpfs 63G 0 63G 0% /dev/shm /dev/sda1 485M 40M 421M 9% /boot 3.2 查看磁盘扇区信息 [root@localhost ~]# fdisk -l Disk /dev/sda: 299.0 GB, 298999349248 bytes # 磁盘/dev/sda 255 heads, 63 sectors/track, 36351 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x4d69fe0e Device Boot Start End Blocks Id System /dev/sda1 * 1 26 204800 83 Linux # 分为2个区, sda1 Partition 1 does not end on cylinder boundary. /dev/sda2 26 36352 291785728 8e Linux LVM # LVM类型的sda2 # 新添加的磁盘/dev/sdb, 没有分区 Disk /dev/sdb: 4000.0 GB, 3999999721472 bytes 255 heads, 63 sectors/track, 486305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 # LVM格式的卷组信息: Disk /dev/mapper/VolGroup-LogVol: 4294 MB, 4294967296 bytes 255 heads, 63 sectors/track, 522 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 3.3 创建分区 [root@localhost ~]# fdisk /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0x5b3d66ba. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) WARNING: The size of this disk is 4.0 TB (3999999721472 bytes). DOS partition table format can not be used on drives for volumes larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID partition table format (GPT). WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): n # 添加分区 Command action e extended p primary partition (1-4) p # 添加主分区 Partition number (1-4): 1 # 1号主分区, 即/dev/sdb1 First cylinder (1-486305, default 1): Using default value 1 Last cylinder, +cylinders or +size{K,M,G} (1-267349, default 267349): 486305 Value out of range. Last cylinder, +cylinders or +size{K,M,G} (1-267349, default 267349): Using default value 267349 Command (m for help): n # 继续添加分区 Command action e extended p primary partition (1-4) p Partition number (1-4): 2 # 2号主分区, 即/dev/sdc2 First cylinder (267350-486305, default 267350): Using default value 267350 Last cylinder, +cylinders or +size{K,M,G} (267350-486305, default 486305): Using default value 486305 Command (m for help): p # 打印分区信息: Disk /dev/sdb: 4000.0 GB, 3999999721472 bytes 255 heads, 63 sectors/track, 486305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x5b3d66ba Device Boot Start End Blocks Id System /dev/sdb1 1 267349 2147480811 83 Linux /dev/sdb2 267350 486305 1758764070 83 Linux Command (m for help): t # 转换类型 Partition number (1-4): 1 Partition number (1-4): 1 # 修改/dev/sdb1为Linux LVM类型: Hex code (type L to list codes): L # 查看可用类型: 0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris 1 FAT12 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT- 2 XENIX root 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT- 3 XENIX usr 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT- 4 FAT16 <32M 41 PPC PReP Boot 85 Linux extended c7 Syrinx 5 Extended 42 SFS 86 NTFS volume set da Non-FS data 6 FAT16 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / . 7 HPFS/NTFS 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility 8 AIX 4f QNX4.x 3rd part 8e Linux LVM df BootIt 9 AIX bootable 50 OnTrack DM 93 Amoeba e1 DOS access a OS/2 Boot Manag 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O b W95 FAT32 52 CP/M 9f BSD/OS e4 SpeedStor c W95 FAT32 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs e W95 FAT16 (LBA) 54 OnTrackDM6 a5 FreeBSD ee GPT f W95 Ext'd (LBA) 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/ 10 OPUS 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b 11 Hidden FAT12 5c Priam Edisk a8 Darwin UFS f1 SpeedStor 12 Compaq diagnost 61 SpeedStor a9 NetBSD f4 SpeedStor 14 Hidden FAT16 <3 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary 16 Hidden FAT16 64 Novell Netware af HFS / HFS+ fb VMware VMFS 17 Hidden HPFS/NTF 65 Novell Netware b7 BSDI fs fc VMware VMKCORE 18 AST SmartSleep 70 DiskSecure Mult b8 BSDI swap fd Linux raid auto 1b Hidden W95 FAT3 75 PC/IX bb Boot Wizard hid fe LANstep 1c Hidden W95 FAT3 80 Old Minix be Solaris boot ff BBT 1e Hidden W95 FAT1 Hex code (type L to list codes): 8e # 修改为8e, 即Linux LVM类型 Changed system type of partition 1 to 8e (Linux LVM) Command (m for help): t Partition number (1-4): 2 # 修改/dev/sdc2为Linux LVM类型 Hex code (type L to list codes): 8e Changed system type of partition 2 to 8e (Linux LVM) Command (m for help): p # 再次查看相关信息: Disk /dev/sdc: 4000.0 GB, 3999999721472 bytes 255 heads, 63 sectors/track, 486305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x5b3d66ba Device Boot Start End Blocks Id System /dev/sdb1 1 267349 2147480811 8e Linux LVM # Id已改变 /dev/sdb2 267350 486305 1758764070 8e Linux LVM Command (m for help): w # 保存并退出 The partition table has been altered! # 修改成功 Calling ioctl() to re-read partition table. Syncing disks. 3.4 创建物理卷 [root@localhost ~]# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created [root@localhost ~]# pvcreate /dev/sdb2 Physical volume "/dev/sdb2" successfully created 3.5 扩展卷组 # 查看已有卷组, 发现该卷组就是需要扩容的卷组, 就不必再次创建卷组, 而是直接扩展卷组即可: [root@localhost ~]# vgs VG #PV #LV #SN Attr VSize VFree VolGroup 2 2 0 wz--n- 1.91t 0 # 扩展卷组: [root@localhost ~]# vgextend VolGroup /dev/sdb1 Volume group "VolGroup" successfully extended [root@localhost ~]# vgextend VolGroup /dev/sdb2 Volume group "VolGroup" successfully extended